Soup bowl from a brick

I have been examined on creativity and asked "For what can you use a brick?". And I thought about using a brick as a soup bowl in a restaurant. Just imagine the eyes of a surprised guest when you tell him "here is your soup" and all he can see is a plate with a steaming brick. The same brick from which the restaurant is built.

How to create a bowl from a brick:

1. You need a high quality brick, which doesn't crumble. It can have decorative imprints on it's sides.
2. Use lathe to carve a bath into the brick. It's possible to carve a logo into the sides of the bowl.
3. Use hydrophobic impregnation to prevent soaking of water by the brick during the washing. 
4. Glaze the inside of the bath so the customer has a sense of cleanliness.

Greatest easily replicable inventions of 20th century

By simple I mean things you can replicate in a reasonably short time just yourself, given you know ahead how to make them.

1. Diffie-Hellman asymmetric cipher
2. Game theory applied to prisoners dilemma, Nash equilibrium
3. Prospect theory. Demonstrate it on a questionnaire
4. Penicilin. Use bread
5. Nylon. Use it on Velcro - demonstrate it on shoe for kids. Use on pantyhose and toothbrush
6. Ballpoint Pen
7. Zip
8. Slinky
9. Rubic cube
10. Sticky notes
11. Contact lenses
12. Two-ply toilet paper 
13. Dunning-Krugger effect (Wikipedia)
14. Bubble wrap 
15. Elastic rope 
16. Jenga (Wikipedia) 
17. Twister game 
18. Crosswords
19. Controlled studies in medicine 
20. Fastener